miu(M)= (137gBa+2x35,5gCl)/mol= 208g/mol BaCl2
miu(M)= ( 137gBa+32gS+4x16gO)/mol=233g/mol BaSO4\
ecuatia reactiei:
1mol.................................1mol
BaCl2 + MgSO4---->BaSO4 + MgCl2
208g...............................233g
52g..................................m= 52x233/208 g BaSO4= ..... CALCULEAZA! .........